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First answer: No.
Second answer: Yes.
A light bulb is a resistance. Current flows across a tungsten filament, heating it to produce light. However, if there was some other resistance wired into a closed circuit, a screw type bulb could be used as a switch. You unscrew it to throw open the circuit, effectively turning off whatever else was wired in the line. Screw it back in to switch it on. So yes, you could use a light bulb as a switch.
Some switches have LED (light emitting diodes) built into them so they light up when the switch is closed, and turn off when the switch is open. And some switches are wired just the opposite, so the LED is on when the switch is off. This makes these types of switches easier to find in the dark.
What else can I help you with?
How does a light bulb dimmer switch work to adjust the brightness of a light bulb?
A light bulb dimmer switch works by controlling the amount of electricity flowing to the light bulb. By adjusting the voltage, the dimmer switch can regulate the brightness of the light bulb.
What materials are conductors in a torch?
The conducting path of a torch is a simple circuit: Battery to switch, switch to bulb, bulb back to battery. Provided the switch is on, and there are no breaks in the circuit wiring (and the bulb is good), the torch should work.
Why bulb does not work when fitted in a circuit with switch?
because you are switch the hot leg, so it can be turn on an off.
How do you make a simple electric bulb go out?
Usually it is by pushing the switch on the wall into the down position. If that does not work, turn the bulb until it does not make contact and fix the switch.
Why the don't flashlight work?
Dead batteries, dead bulb, broken switch.
Why would a compact fluorescent bulb not work in a standard fixture that's not on a dimmer switch and in which an incandescent bulb does work?
If you have another CFB try it in the same position as the one that is not working. It sounds like the CF bulb is defective.
You have no reverse lights on your Vauxhall astra?
Replace the bulb first, if this does not work try the reverse switch.
You Cant get reverse lights to work on peugeot 206?
Could be switch on gearbox, wiring or bulb.
Why does my Jaguar headlights not work?
The headlights on a Jaguar my not work if the bulb or fuse is defective. Alternatively the wiring can be damaged or the switch my have stopped working.
Why does only one headlight work and the switch is good?
Bad bulb/Bad ground/Bad Wire
What materials will made an electric circuit work?
a dry cell a resistor (a bulb maybe) wire switch
What circuits are closed paths that will allow electricity to travel in a loop and make a light bulb work?
a switch
